摘要
常规7芯铠装测井电缆的传输特性并不适于高速传输井下视频数据。介绍基于小波变换和复杂可编程逻辑器件CPLD的高速调制/解调技术和数据压缩技术的测井电缆高速传输系统,使常规的铠装测井电缆实现了数字电视信号的远距离传输。该电路实现简单,可靠性高。在3 000 m的测井电缆上使得上传速率能够达到1 Mbit/s。
The transmission characteristics of conventional 7-conductor armored logging cable is not good to transmit video data with high-speed. This paper introduces a high-speed video data transmission system, in which high-speed modulation/demodulation technology and data compression technology based on wavelet transform and complex programmable logic device （CPLD） are applied, and so that long distance transmission of digital TV signal could be carried out through the logging cable. Its circuit is easy to be implemented and is high stable. The transmission speed could reach 1 Mbit/s in a 3000 m logging armored cable.
出处
《测井技术》
CAS
CSCD
2006年第6期574-575,共2页
Well Logging Technology
关键词
测井电缆
数据传输
压缩
解压
视频数据
logging cable
data transmission
compression
decompression
video data
